Leaveners, Salt & Spices
Convert millilitres of instant yeast to grams
One millilitre of instant yeast weighs about 0.63 g, and half a millilitre comes to roughly 0.315 g. Enter any amount below to convert it, or use the chart further down as a quick reference while you cook.
1 ml of instant yeast =
0.63 g
- oz
- 0.022
- kg
- 0.00063
- lb
- 0.0014
Instant Yeast: 149 g per US cup · NIST Handbook 133. Also sold as rapid-rise or bread machine yeast. Use about 25% less than active dry by weight for the same rise time.
Full instant yeast chart →Instant Yeast at a glance
Every number on this page comes from a single figure: 149 grams per US cup (NIST Handbook 133).
- 1 cup
- 149 g
- 1 tablespoon
- 9.31 g
- 1 teaspoon
- 3.1 g
- 1 cup in ounces
- 5.26 oz
- 100 g in cups
- 0.671 cups
- Density
- 0.63 g/ml
millilitres to grams chart for instant yeast
Print it, screenshot it, or bookmark this page — these are the amounts recipes ask for most often.
| Millilitres | Grams | Ounces (weight) | Pounds |
|---|---|---|---|
| 15 ml | 9.45 g | 0.333 oz | 0.021 lb |
| 30 ml | 18.9 g | 0.666 oz | 0.042 lb |
| 50 ml | 31.5 g | 1.11 oz | 0.069 lb |
| 60 ml | 37.8 g | 1.33 oz | 0.083 lb |
| 100 ml | 63 g | 2.22 oz | 0.139 lb |
| 120 ml | 75.6 g | 2.67 oz | 0.167 lb |
| 150 ml | 94.5 g | 3.33 oz | 0.208 lb |
| 200 ml | 126 g | 4.44 oz | 0.278 lb |
| 240 ml | 151 g | 5.33 oz | 0.333 lb |
| 500 ml | 315 g | 11.1 oz | 0.694 lb |
How this conversion is calculated
Volume-to-weight conversions are only as good as the density behind them. We treat instant yeast as 149 g per US customary cup, which works out to 0.630 g/ml. From there:
- Your millilitres figure is converted into millilitres or grams using standard unit sizes (ml = 1 ml).
- The density above bridges volume and weight in whichever direction you need.
- The result is rounded the way a cook would round it — to the nearest gram, or to a usable fraction such as 2/3 cups.
Measuring instant yeast accurately
Also sold as rapid-rise or bread machine yeast. Use about 25% less than active dry by weight for the same rise time.
If a recipe matters to you — bread, macarons, anything with a tight hydration or ratio — weigh it. A £10 digital scale removes the single largest source of variation in home baking, and it is faster than washing three measuring cups.
When cups are fine
- Liquids measured in a proper jug, where volume is the honest unit anyway.
- Forgiving savoury cooking: soups, stews, stir-fries, marinades.
- Small amounts of leaveners and spices, as long as you use level spoons.
Frequently asked questions
How many grams are in 1 millilitre of instant yeast?
1 millilitre of instant yeast is 0.63 g. This is based on a density of 149 g per US cup.
How many grams are in 2 millilitres of instant yeast?
2 millilitres of instant yeast is 1.26 g, and 0.315 g for half a millilitre.
How much is 100 g of instant yeast in cups?
100 g of instant yeast is about 2/3 cups. Weight is always the more reliable measurement, so use a scale when the recipe gives grams.
Why do other sites give a different number for instant yeast?
Also sold as rapid-rise or bread machine yeast. Use about 25% less than active dry by weight for the same rise time.
Do UK and Australian cups give the same result?
No. A US customary cup is 236.6 ml, a metric cup used in Australia and New Zealand is 250 ml, and an old UK imperial cup is 284 ml. Our default is the US cup, but you can pick metric cups in the converter.